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公开(公告)号：US09175101B2
公开(公告)日：2015-11-03
申请号：US14125797
申请日：2012-06-04
Applicant: Umesh Makwana , Ajay Kothari , Bhavesh Desai , Virendrakumar Gupta
Inventor： Umesh Makwana , Ajay Kothari , Bhavesh Desai , Virendrakumar Gupta
CPC classification number: C08F4/64 , C07C29/70 , C08F110/02 , C08F2500/12 , C08F2500/24 , C08F110/06 , C08F2500/15 , C07C31/30
Abstract: The present invention provides titanium based precursor for polyolefin catalyst with desired morphology and high particle strength. The of preparation of the precursor in accordance with the present invention obviates the use of iodine.
Abstract translation: 本发明提供具有所需形态和高颗粒强度的聚烯烃催化剂的钛基前体。 根据本发明的前体的制备消除了碘的使用。
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公开(公告)号：US08853118B2
公开(公告)日：2014-10-07
申请号：US12933366
申请日：2008-08-25
Applicant: Virendrakumar Gupta , Harshad Ramdas Patil , Dhananjay Ghelabhai Naik
Inventor： Virendrakumar Gupta , Harshad Ramdas Patil , Dhananjay Ghelabhai Naik
CPC classification number: C08F10/00 , C08F110/06 , C08F4/651 , C08F4/6494 , C08F2500/12 , C08F2500/04
Abstract: The invention relates to a catalyst system for polymerization of propylene, the catalyst system comprising a Ziegler Natta procatalyst, an organoaluminium cocatalyst, a monoester of an aromatic carboxylic acid as the internal donor and ethyl-4-isopropoxy benzoate as the selectivity control agent. The invention also relates to a process for polymerization using the catalyst system as well as to polymers prepared by the process.
Abstract translation: 本发明涉及一种用于丙烯聚合的催化剂体系，该催化剂体系包含齐格勒纳塔催化剂，有机铝助催化剂，作为内给体的芳族羧酸的单酯和作为选择性控制剂的乙基-4-异丙氧基苯甲酸酯。 本发明还涉及使用催化剂体系的聚合方法以及通过该方法制备的聚合物。
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公开(公告)号：US20130211022A1
公开(公告)日：2013-08-15
申请号：US13808761
申请日：2011-07-11
Applicant: Virendrakumar Gupta , Saurabh Singh , Jomichan Joseph , Kamlesh J. Singala , Bhavesh K. Desai
Inventor： Virendrakumar Gupta , Saurabh Singh , Jomichan Joseph , Kamlesh J. Singala , Bhavesh K. Desai
IPC: C08F4/10
CPC classification number: C08F4/52 , C08F4/10 , C08F4/16 , C08F10/00 , C08F110/02 , C08F110/06 , C08F4/651 , C08F4/6548 , C08F2500/12 , C08F2500/24 , C08F4/6494
Abstract: Regular shaped magnesium particles containing attrition resistant precursors and procatalysts thereof and processes for their synthesis and their use in the manufacture of polyolefins are described. A process for the synthesis of precursor particles which give highly active and improved surface area procatalysts for producing high bulk density polyolefin resins containing low fines and capable of incorporating high rubber content are described. A process for the synthesis of an attrition resistant precursors to prepare an attrition resistant Zeigler Natta procatalysts synthesized by using the precursors and to the polyolefin resin synthesized using the procatalysts is also described.
Abstract translation: 描述了含有抗磨损前体及其前催化剂的规则形状的镁颗粒及其合成方法及其在制备聚烯烃中的用途。 描述了一种合成前体颗粒的方法，其提供了高活性和改进的表面积原催化剂，用于生产含低细粉和能够掺入高橡胶含量的高体积密度聚烯烃树脂。 还描述了合成抗磨损前体以制备通过使用前体合成的耐磨Zeigler Natta前催化剂和使用前催化剂合成的聚烯烃树脂的方法。
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公开(公告)号：US20140316084A1
公开(公告)日：2014-10-23
申请号：US14117336
申请日：2012-05-08
Applicant: Harshad Ramdas Patil , Priyanshu Bharatkumar Vyas , Virendrakumar Gupta
IPC: C08F110/06
CPC classification number: C08F110/06 , C08F10/06 , C08F4/6465 , C08F4/6494 , C08F4/6543 , C08F2500/12 , C08F2500/21
Abstract: The present invention relates to a catalyst system for polymerization of propylene, process for preparing polypropylene and to polypropylene prepared by said process. The dual external donor composition of present invention has synergistic effects. It improves the efficiency of polymerization process and product properties for homo grade of polypropylene.
Abstract translation: 本发明涉及用于聚合丙烯的催化剂体系，制备聚丙烯的方法和通过所述方法制备的聚丙烯。 本发明的双重外源供体组合物具有协同效应。 提高了聚丙烯的均聚效率和产品性能。
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公开(公告)号：US08809221B2
公开(公告)日：2014-08-19
申请号：US14116467
申请日：2012-05-07
Applicant: Harshad Ramdas Patil , Priyanshu Bharatkumar Vyas , Virendrakumar Gupta
IPC: B01J31/00 , B01J37/00 , B01J27/24 , C08F4/02 , C08F4/60 , C08F4/44 , C08F4/06 , C08F2/00 , C08F2/04
CPC classification number: C08F110/06 , C08F10/06 , Y02P20/52 , C08F4/6495 , C08F4/6465 , C08F4/6543 , C08F2500/12 , C08F2500/17
Abstract: The present invention discloses new class of nitrogen containing external donor systems. These donor systems are used in titanium supported on magnesium dichloride pro-catalyst system for polymerization of propylene. The external donor systems of the present invention in combination with silane show the kinetics control for diester catalyst polymerization process along with stereo regularity control of product. The polypropylene produced using nitrogen containing external donor systems of the present invention have broad molecular weight distribution.
Abstract translation: 本发明公开了新一类含氮外源供体系统。 这些供体系统用于负载丙烯聚合的二氯化镁催化剂体系的钛中。 本发明的外部供体体系与硅烷结合显示了二酯催化剂聚合方法的动力学控制以及产品的立体规律性控制。 使用本发明的含氮外部给体体系制备的聚丙烯具有宽的分子量分布。
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Patent Agency Ranking
6.发明申请SEMI CONTINUOUS PROCESS FOR THE SYNTHESIS OF A CATALYST FOR USE IN THE MANUFACTURE OF POLYOLEFINS 有权用于合成在聚烯烃制造中的催化剂的半连续工艺公开(公告)号：US20130053521A1
公开(公告)日：2013-02-28
申请号：US13514726
申请日：2010-12-14
Applicant: Kamlesh Singala , Saurabh Singh , Virendrakumar Gupta
Inventor： Kamlesh Singala , Saurabh Singh , Virendrakumar Gupta
CPC classification number: C08F10/06 , C01G23/0536 , C01P2004/51 , C08F110/06 , Y10S526/908 , C08F4/651 , C08F2/14 , C08F2/00 , C08F2500/12
Abstract: A semi-continuous process and system thereof, for the synthesis of a narrow particle size distribution Zeigler Natta procatalyst for use in the manufacture of polyolefins. The process comprises: (a) mixing a reaction mixture containing a titanium compound; (b) charging a first reactor with said reaction mixture; (c) removing excess reactants from said first reactor as a filtrate; (d) feeding said filtrate to at least one further reactor; and continuously removing excess reactants from said at least further reactor.
Abstract translation: 用于合成用于制备聚烯烃的窄粒度分布Zeigler Natta前催化剂的半连续方法和系统。 该方法包括：（a）混合含有钛化合物的反应混合物; （b）向所述反应混合物中加入第一反应器; （c）作为滤液从所述第一反应器中除去过量的反应物; （d）将所述滤液进料至至少一个另外的反应器; 并从所述至少另外的反应器中连续地除去过量的反应物。
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公开(公告)号：US20140155560A1
公开(公告)日：2014-06-05
申请号：US14116467
申请日：2012-05-07
Applicant: Harshad Ramdas Patil , Priyanshu Bharatkumar Vyas , Virendrakumar Gupta
IPC: C08F110/06
CPC classification number: C08F110/06 , C08F10/06 , Y02P20/52 , C08F4/6495 , C08F4/6465 , C08F4/6543 , C08F2500/12 , C08F2500/17
Abstract: The present invention discloses new class of nitrogen containing external donor systems. These donor systems are used in titanium supported on magnesium dichloride pro-catalyst system for polymerization of propylene. The external donor systems of the present invention in combination with silane show the kinetics control for diester catalyst polymerization process along with stereo regularity control of product. The polypropylene produced using nitrogen containing external donor systems of the present invention have broad molecular weight distribution.
Abstract translation: 本发明公开了新一类含氮外源供体系统。 这些供体系统用于负载丙烯聚合的二氯化镁催化剂体系的钛中。 本发明的外部供体体系与硅烷结合显示了二酯催化剂聚合方法的动力学控制以及产品的立体规律性控制。 使用本发明的含氮外部给体体系制备的聚丙烯具有宽的分子量分布。
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公开(公告)号：US08633124B2
公开(公告)日：2014-01-21
申请号：US12989230
申请日：2008-09-01
Applicant: Virendrakumar Gupta , Saurabh Singh , Umesh Makwana , Jomichan Joseph , Kamlesh Singala , Smitha Rajesh , Vallabhbhai Patel , Mukeshkumar Yadav , Gurmeet Singh
Inventor： Virendrakumar Gupta , Saurabh Singh , Umesh Makwana , Jomichan Joseph , Kamlesh Singala , Smitha Rajesh , Vallabhbhai Patel , Mukeshkumar Yadav , Gurmeet Singh
CPC classification number: C07C31/28 , C07C29/70 , C08F10/00 , C07C31/30 , C08F4/6494 , C08F4/6548
Abstract: The invention relates to a process for the synthesis of spheroidal magnesium alkoxide having improved mechanical strength and narrow particle size distribution, the process comprising reacting magnesium metal, in the presence of iodine, with a mixture of alcohols by step-wise heating first in the range of 40° C. to 65° C. for a period of 2 hours and then in the range of 65° C. to 80° C. for a period of 1 hour, further by maintaining reaction temperature at 80° C. for a period of 6-10 hours, the vapors of the mixture produced during the reaction being condensed in an overhead condenser, hydrogen gas produced during the reaction being vented off and the mixture of alcohols left after the reaction being filtered and reused. The invention also relates to spheroidal magnesium alkoxide particles synthesized by the method, to the Ziegler natta procatalyst synthesized by using the alkoxide and to the polymer resin synthesized using the procatalyst.
Abstract translation: 本发明涉及一种合成具有改善的机械强度和窄粒度分布的球形镁醇盐的方法，该方法包括在碘的存在下使镁金属与醇的混合物反应，首先在该范围内逐步加热 在40℃至65℃下加热2小时，然后在65℃至80℃的范围内持续1小时，此外通过将反应温度保持在80℃，以获得 时间为6-10小时，反应中产生的混合物的蒸气在塔顶冷凝器中冷凝，在反应期间产生的氢气被排出，反应后留下的醇的混合物被过滤并重新使用。 本发明还涉及通过该方法合成的球形烷醇镁颗粒，使用通过使用醇盐合成的齐格勒纳塔催化剂和使用前催化剂合成的聚合物树脂。
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公开(公告)号：US08283424B2
公开(公告)日：2012-10-09
申请号：US12933370
申请日：2008-08-25
Applicant: Virendrakumar Gupta , Harshad Ramdas Patil , Dhananjay Ghelabhai Naik
Inventor： Virendrakumar Gupta , Harshad Ramdas Patil , Dhananjay Ghelabhai Naik
CPC classification number: C08F10/00 , C08F110/06 , Y10T428/2982 , C08F4/6541 , C08F4/651 , C08F2500/12
Abstract: The invention relates to a process for the synthesis of a Ziegler Natta procatalyst, the process comprising first treating magnesium alkoxide with a twice used mixed solvent of TiCl4 and chlorobenzene to form a first stage product, then treating the first stage product with a once used mixed solvent of TiCl4 and chlorobenzene to form a second stage product and finally treating the second stage product with mixed solvent recovered by treatment of effluent from the first treatment with benzoyl chloride so as to convert contaminant of formula TiCl3OR in the effluent to an addition complex which is precipitated, filtered off and hydrolyzed to recover ethyl benzoate and to form Ti(OH)4 as a side product, the product after final treatment being subjected to a plurality of successive washing steps with used as well as recovered hexane.
Abstract translation: 本发明涉及一种合成齐格勒纳塔前催化剂的方法，该方法包括首先用两次使用的TiCl 4和氯苯混合溶剂处理烷醇镁以形成第一阶段产物，然后用一次性混合物处理第一阶段产物 溶剂的TiCl4和氯苯形成第二阶段产物，最后用用苯甲酰氯处理来自第一次处理的流出物回收的混合溶剂处理第二阶段产物，以将流出物中式TiCl 3OR的污染物转化为加成络合物， 沉淀，过滤并水解回收苯甲酸乙酯并形成作为副产物的Ti（OH）4，最终处理后的产物经过多次连续的洗涤步骤和回收的己烷。
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公开(公告)号：US20110046326A1
公开(公告)日：2011-02-24
申请号：US12989775
申请日：2008-08-25
Applicant: Virendrakumar Gupta , Harshad Ramdas Patil , Dhananjay Ghelabhai Naik , Sukhdeep Kaur , Gurmeet Singh , Priyanshu Bharatkumar Vyas
Inventor： Virendrakumar Gupta , Harshad Ramdas Patil , Dhananjay Ghelabhai Naik , Sukhdeep Kaur , Gurmeet Singh , Priyanshu Bharatkumar Vyas
CPC classification number: C08F10/06 , C08F110/06 , C08F4/6494 , C08F4/6495 , C08F4/6465 , C08F2500/12
Abstract: The invention relates to a catalyst system for polymerization of olefins, the catalyst system comprising a titanium-containing procatalyst carrying internal electron donor(s), an organoaluminium cocatalyst and a mixture of external electron donors, the mixture comprising a carboxylic acid ester or derivatives thereof, an alkoxy silane and a nitrogen based compound. The invention also relates to a process for polymerization of olefin(s) and to the polyolefin synthesized by the process.
Abstract translation: 本发明涉及一种用于烯烃聚合的催化剂体系，所述催化剂体系包含含有载体内电子给体的含钛前催化剂，有机铝助催化剂和外电子给体的混合物，所述混合物包含羧酸酯或其衍生物 ，烷氧基硅烷和氮基化合物。 本发明还涉及一种聚合烯烃和通过该方法合成的聚烯烃的方法。
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